Flap warning, abort takeoff.

Attributes
ACN	103155
Time
Date	198901
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : slc
State Reference	UT
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 20000 flight time type : 100
ASRS Report	103155
Person 2
Affiliation	company : air carrier
Function	observation : company check pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 25000 flight time type : 2500
ASRS Report	103077
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Aircraft was in position for takeoff. When power was added we heard a flap warning. A quick check revealed the flaps were set properly and indicated the proper position but the warning persisted and we taxied off the runway. Investigation revealed that the takeoff flap cg computer was slightly out of position which caused the warning. The computer was reset and no further warnings were experienced. The problem may have been noticed earlier but one of the pilots was a check airman giving another pilot (captain) a line qualification into jackson hole so the takeoff briefing was quite extensive. Also, the numbers on the flap computer were worn and dusty and not too legible. The captain getting the qualification had just over 100 hours in aircraft. So inexperience a factor.

Original NASA ASRS Text

Title: FLAP WARNING, ABORT TKOF.

Narrative: ACFT WAS IN POS FOR TKOF. WHEN PWR WAS ADDED WE HEARD A FLAP WARNING. A QUICK CHK REVEALED THE FLAPS WERE SET PROPERLY AND INDICATED THE PROPER POS BUT THE WARNING PERSISTED AND WE TAXIED OFF THE RWY. INVESTIGATION REVEALED THAT THE TKOF FLAP CG COMPUTER WAS SLIGHTLY OUT OF POS WHICH CAUSED THE WARNING. THE COMPUTER WAS RESET AND NO FURTHER WARNINGS WERE EXPERIENCED. THE PROB MAY HAVE BEEN NOTICED EARLIER BUT ONE OF THE PLTS WAS A CHK AIRMAN GIVING ANOTHER PLT (CAPT) A LINE QUALIFICATION INTO JACKSON HOLE SO THE TKOF BRIEFING WAS QUITE EXTENSIVE. ALSO, THE NUMBERS ON THE FLAP COMPUTER WERE WORN AND DUSTY AND NOT TOO LEGIBLE. THE CAPT GETTING THE QUALIFICATION HAD JUST OVER 100 HRS IN ACFT. SO INEXPERIENCE A FACTOR.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.